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package topology
import (
"fmt"
"github.com/chrislusf/seaweedfs/weed/storage"
"github.com/chrislusf/seaweedfs/weed/util"
)
type Collection struct {
Name string
volumeSizeLimit uint64
storageType2VolumeLayout *util.ConcurrentReadMap
}
func NewCollection(name string, volumeSizeLimit uint64) *Collection {
c := &Collection{Name: name, volumeSizeLimit: volumeSizeLimit}
c.storageType2VolumeLayout = util.NewConcurrentReadMap()
return c
}
func (c *Collection) String() string {
return fmt.Sprintf("Name:%s, volumeSizeLimit:%d, storageType2VolumeLayout:%v", c.Name, c.volumeSizeLimit, c.storageType2VolumeLayout)
}
func (c *Collection) GetOrCreateVolumeLayout(rp *storage.ReplicaPlacement, ttl *storage.TTL) *VolumeLayout {
keyString := rp.String()
if ttl != nil {
keyString += ttl.String()
}
vl := c.storageType2VolumeLayout.Get(keyString, func() interface{} {
return NewVolumeLayout(rp, ttl, c.volumeSizeLimit)
})
return vl.(*VolumeLayout)
}
func (c *Collection) Lookup(vid storage.VolumeId) []*DataNode {
for _, vl := range c.storageType2VolumeLayout.Items() {
if vl != nil {
if list := vl.(*VolumeLayout).Lookup(vid); list != nil {
return list
}
}
}
return nil
}
func (c *Collection) ListVolumeServers() (nodes []*DataNode) {
for _, vl := range c.storageType2VolumeLayout.Items() {
if vl != nil {
if list := vl.(*VolumeLayout).ListVolumeServers(); list != nil {
nodes = append(nodes, list...)
}
}
}
return
}
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